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261  Economy / Service Announcements / Re: [ANN] BitcoinStore.com (Beta) - Electronics super store with over 500K items! on: April 11, 2013, 06:37:47 AM
Hey BitcoinStore, time to start displaying prices in mBTC, don't you think? Wink

We'll be adding a couple decimal places in soon! Smiley

Nah, adding decimal places is... "weird". Soon we'll have to express prices in scientific notation. Cheesy

Just express your prices in mBTC, I think it's about time. One mBTC is worth more than 10 cents of dollar already. Instead of saying an item costs 0.12 BTC, just say it costs 120 mBTC, for example.

Well, these are just my 2 millies. Wink

262  Local / Discussions générales et utilisation du Bitcoin / Re: Synchronisation avec le réseau (Bitcoin) on: April 11, 2013, 06:29:09 AM
Pour les miners il est obligatoire d'avoir le client bitcoin officiel avec tous les blocks à jour ?

Le terme "miner" est un peu ambigu. Il y a ceux qui calculent les hashs, il y a ceux qui génèrent les blocks, et il y a ceux qui font les deux. Seulement ceux qui génèrent les blocks ont besoin d'avoir la base des données complète, ceux qui ne font que calculer les hashs n'ont pas ce besoin. En gros, ça dépend de ce que tu fais:

  • Solo miners: Ils génèrent les blocks et calculent les hashs tous seuls, sans se mettre dans un pool. Ils ont besoin du client complet.
  • P2Pool miners: Ils travaillent dans un pool décentralisé, ce qui leur oblige à être capables de générer les blocks, donc ils ont besoin du client complet.
  • Mineurs de pools centralisés: Ils ne font que calculer des hashs, ils ne génèrent pas de blocks. Pas besoin donc du client complet.
  • Pool operators: Ils génèrent les blocks que ses mineurs vont hasher. Ils ont donc besoin du client complet.

Mais pour le moment le fichier fait 11go environs, et dans 5ans ?!

La base de données grandit exponentiellement car l'utilisation de Bitcoin grandit exponentiellement. Éventuellement l'utilisation va stabiliser. Quand ça arrive, la BD va grandir linéairement . Les ressources matériels, en revanche, continueront à grandir de façon exponentielle. Cela ne m'étonnerait pas si dans 20 ans on soit capable d'avoir un client complet dans un téléphone.

Il se peut, au pire des cas, que dans un future moyen terme les ressources nécessaires pour avoir un client complet soient d'un niveau "pro", c'est à dire, il va falloir en mettre de l'argent et en faire son métier. Mais rappelons-nous que ces mineurs, particulièrement les opérateurs des pools, sont rémunérés pour ça.

Tu peux consulter cette page si la montée en échelle t'intéresse: https://en.bitcoin.it/wiki/Scalability

Pour ceux qui ne font que du trading un wallet avec multibit ou electrum suffit ? Pas besoin de télécharger tous les blocks ?

Oui.
263  Bitcoin / Bitcoin Discussion / Re: Future Bitcoin millionaires - will you cash out when you hit $1M? on: April 10, 2013, 03:02:21 PM
OVERNIGHT THIS HAPPENED ..............BITCOIN WENT FROM 125 TO 119.  any forex traders out there?

Apparently you're not yet following this awesome thread: https://bitcointalk.org/index.php?topic=154954.0;all
264  Economy / Speculation / Re: London Hedge Funds moving into Bitcoin on: April 10, 2013, 12:17:52 PM
Dark pools also help large holders sell large quantities so that they do not crash the market, because of one of the large sellers tried to unload 500K coins.....no, they would not get higher prices on the open market.

You set your selling price. If you're a big seller and don't want to "crash" the market, build your wall at the price you believe there will buyers. If the big London buyers really want that much, they'll consume your wall.

What are the actual purposes of a darkpool? It'd work exactly the same way, only without announcing the wall. So what? The end price will necessarily be the same, i.e., the result of supply and demand.
265  Economy / Speculation / Re: London Hedge Funds moving into Bitcoin on: April 10, 2013, 12:12:44 PM
Thank you. Even if they do go in with 1B (??), they will be using dark liquidity. They would/could not do this on the open market.

Dark pools would allow large holders to cash out without crashing the market, and allow themselves to enter a position without driving the market to absurd heights. You would not even know it happened.

I never understood this hypothetical logic of dark pools. It's as if you were claiming that supply and demand only affects price when deals are made publicly, but that's obviously not true. Prices are driven by supply and demand regardless of whether there is a "public market" or not.
Throwing one gigabuck at Bitcoin will certainly produce a tsunami in the price, with or without dark pools.
266  Economy / Speculation / Re: Parity watch -> Albania on: April 10, 2013, 06:16:01 AM
I have a feeling Iceland is a key level. Everybody knows what it is. Saying "Bitcoin > Iceland" is a pretty good one liner.

You can already say that if you use the monetary base (M0) instead of M1. These 11M bitcoins we are using in this calculation are Bitcoin's monetary base and M1/2/3/4 as Bitcoin has no fiduciary money so far.
267  Economy / Trading Discussion / Re: You would be crazy to spend bitcoins when its rising so much in value on: April 09, 2013, 07:14:21 PM
Why does it matter if I buy bitcoins for real money

Bitcoin is real.
Physical != real. Otherwise, no fiat money would be real either.
268  Economy / Trading Discussion / Re: You would be crazy to spend bitcoins when its rising so much in value on: April 09, 2013, 04:52:00 PM
I use real money for purchasing things, and bitcoins as a growing investment. There are barely any places for me (as a Swede) to spend bitcoins anyway. I think that is working quite nicely.

Unfortunately, the result will be disaster if everyone does that. Bitcoin's only utility is as a medium of exchange. If it is not used as such, then it has no utility and no value.

That's not true. There's practically no actual use of gold bullion as medium of exchange. It's mostly a store of value. Bitcoin can be a store of value too.
269  Bitcoin / Bitcoin Discussion / Re: An insider's opinion on the crazy Bitcoin market on: April 09, 2013, 12:14:22 PM
States are getting more and more desperate for money..... this is not going to end well. Sad

It would be a good thing if everything were to collapse the soonest possible, so that they have the political excuse to default on these monstrous debts for once and for good.
270  Other / Politics & Society / Re: Bitcoin is already illegal in China on: April 09, 2013, 12:08:40 PM
China has been leading the way with the recent rise to $200 so I guess that making bitcoin illegal does not kill the price.  

I'd like to agree with you but I'm not sure your reasoning stands. Something being illegal is irrelevant if the said illegality is not actually enforced. And AFAIK, no Chinese resident has ever been punished for using Bitcoin, so I'd say the law you cite is pretty much irrelevant price-wise, for the moment at least.

EDIT: He, the irony is that, if they make it illegal to use any virtual currency, then every fiat currency of this world should be illegal too. Or do they make an explicit exception for fiat currencies?
271  Bitcoin / Bitcoin Discussion / Re: The smartest article on why Bitcoin won't become the next currency on: April 09, 2013, 07:15:26 AM
Items that swing wildly up & down are considered speculative commodities (like gold), or a speculative investment (like the stock market).

Gold was money for millenia and could certainly become money again.. well, if there wasn't a better alternative right here. ;-)


Concerning price fluctuations, it's only so wild because the demand fluctuations for bitcoin are wild, because new people "enter and leave" daily. The day that the number of people entering and leaving Bitcoin-world is small compared to number of people already in, you'll have the price stability you want.
272  Economy / Economics / Re: Europe considering Cyprus model for all european bank failures on: April 08, 2013, 06:31:37 PM
Doubtful it's going to happen across the board in all EU countries.

Cypriots likely used to think the same...
273  Local / Français / Re: File des nouveaux venus français on: April 08, 2013, 11:55:18 AM
J'essaie de créditer mon compte sur blockchain, mais lorsque je dois choisir le pays où se trouve la banque pour faire le virement, il n'y a pas la France !?

Il faut que tu trouves une exchange qui accepte de virement SEPA.
MtGox, Bitcoin-central, BitStamp en sont des exemples. Il y a d'autres.

Autrement, tu peux aussi utiliser des système d'échange entre personnes, comme localbitcoins ou bitcoinary.
274  Local / Français / Re: File des nouveaux venus français on: April 08, 2013, 11:52:42 AM
Quote
Ha, au fait, j'ai créé un compte sur blockchain.info, est-ce une bonne idée pour gérer mes bitcoins ?

Pour de "petit" montant, blockchain.info est bien

Il suffit d'activer l'authentification à 2 facteurs et c'est réglé.
Même avec ton mot de passe, impossible de vider ton compte.

Hum, ça m'intrigue, car d'après ce que je connaissais sur blockchain.info, ils gardaient carrement un fichier pour toi avec tes clés, chiffré avec ton mot de passe. Ce fichier doit être envoyé au client pour qu'il le déchiffre et signe les transactions.

Un malware qui choppe ce fichier + le mot de passe pourrait donc te voler. Comment marche-t-il leur authentification à 2-facteurs? Est-ce qu'ils sont déjà en train d'utiliser multisig? Dans ce cas c'est super!

Je vois que je dois relire leur FAQ. Smiley

De plus sur blockchain.info une sauvegarde de ton portefeuille est envoyé par mail.
Donc même si le site crash, tu aura toujours ton wallet !

S'ils utilisent multsig, ce n'est plus vrai; il faut leur clé à eux pour dépenser. S'ils n'utilisent pas multisig, je ne vois pas comment ils peuvent empêcher un malware de te piquer avec cette authentification à 2-facteurs.

EDIT: Depuis leur page de support:
Quote from: blockchain.info
It is highly recommended you enable two factor authentication on your My wallet account. Your wallet data is still only encrypted with your password however a second authentication step will need to be passed before your encrypted wallet data is output. Currently we support Yubikey and email two-factor authentication.

Donc c'est comme je croyais, un malware qui te pique le fichier et le mot de passe (pas super compliqué) peut te piquer ton argent. Il n'as pas besoin d'accéder blockchain.info pour le dépenser donc le 2-factor est inutile dans ce cas.
275  Economy / Economics / Re: Time to Short Western Union on: April 08, 2013, 09:26:14 AM
Bitcoin should make Western Union obsolete. Bitcoin is free, fast and anonymous, Western Union is now the living dead unless it can either:

1) Radically change its business model and switch to bitcoin

Perhaps they're already getting ready? http://mashable.com/2013/04/02/western-union-bitcoin/
276  Local / Français / Re: File des nouveaux venus français on: April 08, 2013, 09:21:38 AM
Malheureusement aujourd'hui ces solutions demandent un peu de geekisme de ta part.

Par ex, si tu as un vieux pc qui tu n'utilise plus à rien, tu pourrais lui consacrer à ça. Formates-le, et suit ça: https://bitcoinarmory.com/using-offline-wallets-in-armory/

Sinon, tu peux faire un truc similaire avec un système Live dans une clef USB.
277  Local / Français / Re: File des nouveaux venus français on: April 08, 2013, 07:32:19 AM
Ha, au fait, j'ai créé un compte sur blockchain.info, est-ce une bonne idée pour gérer mes bitcoins ?

Pas bcp.
Si on te choppe ton mot de passe, tu perds tout. Et tout simplement en navigant le web tu peux finir dans des sites 'dangereux' qui peuvent exploiter une faille dans ton système pour t'infecter, même si toi tu y est pour rien.

L'idéale est un portefeuille qui n'est jamais accédée à partir d'un système utilisé pour naviguer dans la web.
278  Economy / Economics / Re: My bank account's got robbed by European Commission. Over 700k is lost. on: April 08, 2013, 06:33:43 AM
Switzerland has struggled to keep the CHF rate reasonable to stop their export base being hollowed out by a cheap euro. They have even threatened to print as many francs as it takes to do it. The problem is that the few countries which try to run a sound monetary system are undermined by all the others who are in competitive devaluation. Unless world trade collapses the currency wars reduce all states to a beggar-thy-neighbour policy.

Please, that's mercantilist reasoning. It was debunked a couple centuries ago.

Swiss were doing very well with the strong CHF. Their purchasing power was rising yearly. Now, to temporarily protect a small sector of their society (exporters), they will impoverish their entire society and all those who hold CHF! That's pure nonsense. Why everybody should have their purchasing power decreased in order to save a less efficient sector of their society?
And btw, many exporters also benefit from a strong purchasing power, as they also import some inputs to their business.
279  Economy / Service Announcements / Re: [ANN] BitcoinStore.com (Beta) - Electronics super store with over 500K items! on: April 08, 2013, 06:25:07 AM
Hey BitcoinStore, time to start displaying prices in mBTC, don't you think? Wink
280  Bitcoin / Development & Technical Discussion / Re: on average, how much HD space does bitcoin-qt consume per day on: April 08, 2013, 06:23:10 AM
You just showed with this bad attempt of irony that you're not really aware about SPV.
BitcoinJ is a SPV node, which already uses bloom filters. MultiBit and Android Wallet are two clients which use BitcoinJ.
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